<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<p>
  <input type="button" value="发送" onclick="send();">
</p>
<script src="https://code.jquery.com/jquery-3.3.1.min.js" crossorigin="anonymous"></script>
<script>
    function send(){
        $.post(
          "/community/alpha/ajax",
            {"name":"张三","age":"13"},
            function (data){
              console.log(typeof(data));
              console.log(data);

              data=$.parseJSON(data);
              console.log(typeof(data));
              console.log(data.code);
              console.log(data.msg);
            }
        );
    }
</script>
</body>
</html>